import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;

/**
 * Created with IntelliJ IDEA.
 * Description: 文件流，字符读操作
 */
public class Demo10 {
    public static void main(String[] args) {
        try(Reader reader = new FileReader("d:/test.txt")) {
            while(true) {
                char[] buffer = new char[20];
                int len = reader.read(buffer);
                if(len == -1) {
                    break;
                }
                /*for (int i = 0; i < len; i++) {
                    System.out.println(buffer[i]);
                }*/
                String s = new String(buffer, 0, len);
                System.out.println(s);
            }
        } catch(IOException e) {
            e.printStackTrace();
        }
    }
}
